Question

How is sound measured?

Answer 1

Explanation:

1. The sound pressure level, measured in $\mu Pa$ or $Pa$, is one aspect of the acoustic (sound) wave that is frequently used to measure how much noise is being exposed to humans.
2. Decibels are the units used to measure sound intensity, often known as sound power or sound pressure. The decibel $\left(dB\right)$ unit is named after Alexander Graham Bell, who also created the audiometer and the telephone. An audiometer is a tool used to measure a person's hearing capacity for various noises.
3. Different from other well-known measuring scales is the decibel. Contrary to many common measurement tools, such as rulers, the decibel scale is logarithmic. This type of scale is a better representation of how our ears truly perceive variations in sound strength.
4. Watts per square meter is a unit of measurement for sound intensity $\left(W{m}^{-2}\right)$. At a frequency of $1000Hz$, the tiniest sound that a human ear can hear has an intensity of around ${10}^{-12}W{m}^{-2}$. The hearing threshold is what it is known as. Similar to this, the loudest sound that a human ear can handle has an intensity of roughly $1W{m}^{-2}$. The pain threshold is what it is known as.